* The original TRON animation created by Lisberger Studios was marketed by Steve Lisberger as a television advertisement for various radio stations.
* The TronLines on the helicopter in the opening filmed sequence was neither CGI nor painted cel animation, but reflective tape placed on the helicopter and filmed with red lights from a distance.
* ActingForTwo
** Dillinger, Sark and the MCP are all played by Creator/DavidWarner.
** All programs have the same actor as their Users: Flynn and Clu, Alan and Tron, Lara and Yori...
** Even the PA announcements in the laser bay were done by the same person voicing the announcements inside the Game Grid.
* {{Defictionalization}}
** The "Light Cycle" game became a popular arcade game pretty quickly, which is somewhat recursive considering that it itself was based on one of the first arcade games.
** Inverted with the ''{{VideoGame/TRON}}'' arcade game (whose cabinet is briefly seen) which was released just shortly before the movie (and spawned both a sequel and a few home games). The movie received not one, but ''two'' arcade games: ''TRON'' and ''Discs of TRON''. ''Discs'' was originally supposed to be part of the former, but was cut for time. Interestingly, the "Grid Bugs" appear in the game ''TRON'', but only receive a comment in the movie ''TRON''!
** Eventually played straight with ''Space Paranoids'', which was released as an online game in 2009.
* DeletedScene: The "love" scene between Tron and Yori, including Yori getting a new outfit before they head for the I/O Tower. Described in detail in the novel.
* DoingItForTheArt: Stephen Lisberger said he originally had the solar sailer's wings be opaque, since making them translucent would cost an arm and a leg. He was finally convinced, and was happy that he was, stating that the sailer was far more beautiful, delicate and butterfly-like with translucent wings.
* HeyItsThatGuy
** Show this one to a ''Series/BabylonFive'' fan. Boxleitner's obvious, [[Creator/DavidWarner as is the guy after the Holy Grail]], but the future Centauri ambassador is harder to spot...
** And you might also notice that [[BillAndTedsExcellentAdventure Mr. The Kid]] plays Ram.
** Prior to Film/{{Titanic}}, in which he plays Lovejoy (the bodyguard of [[BigBad Cal]]), Creator/DavidWarner's triple-play as Dillinger, Sark and [[spoiler: the Master Control Program]] would've been considered one of his most famous roles.
** [[Film/FridayThe13thTheFinalChapter Jason Voorhees]] is one of the guards.
* KeepCirculatingTheTapes: By the time of ''Film/TronLegacy'''s release in 2010, the film was hard to find on either DVD or Netflix. Seemed weird, as studios normally use sequels to put some films [[LimitedSpecialCollectorsUltimateEdition back in the market]] (''TRON'' only got that when ''Legacy'' hit shelves in 2011).
* TalkingToHimself: David Warner plays Dillinger, Sark, ''and'' the MCP. The MCP is shown to interact with the other two on numerous separate occasions.
* TechnologyMarchesOn: Sort of -- the film is based in an '80s supercomputer, and the angular look was a deliberate aesthetic choice to make ''TRON'' look like a 16-bit world.
* ThrowItIn: When the prints came back from Taiwan, there were often errors in the frames. Since it would cost ''way'' to much to have it done over, Lisberger had a EurekaMoment and realized, of ''course'' the computer world would have ''electric glitches''. So, basically, he added a sound effect and it became ''atmosphere''.
* WhatCouldHaveBeen
** The director asked Peter O'Toole to play Dillinger... however, he ''really'' wanted to play Tron.
** On the DVD's "Making of" documentary, they explain that O'Toole bowed out after finding out that the majority of the film would be shot in front of blue-screen (or black, whatever) instead of on sets and locations. Technically, any scenes in the electronic world that had actors in them were filmed on sets. They were just all black with backlit animation added in post-production.
** The first band offered to score rock songs for the movie's soundtrack was Music/{{Supertramp}}.
* {{Word of God}}: All of the programs retain their User's personality. For example, Cindy Morgan was told that Yori retains some vague memory of her user (Lora) having a romance with Flynn at one time.
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